Reported Reactions

Drugs › Cytomegalovirus nucleoside analog DNA polymerase inhibitor

Generic name

Ganciclovir sodium: adverse event reports filed with FDA

568 reports list it as a suspect or interacting product, 2004–2026. Class: Cytomegalovirus nucleoside analog DNA polymerase inhibitor.

568
reports as suspect product
0% of all reports · about 25 a year
86
reports, 12 months to June 2026
73 in the 12 months before
96.5%
marked serious by the reporter
94.2% across the class
39.1%
record death among outcomes, as reported
222 reports · not verified by FDA

568 adverse event reports received by FDA list ganciclovir sodium, a generic name as a suspect or interacting product, from February 2004 to June 2026. A further 139 reports list it only as a concomitant medication, and those are not counted in the figures on this page.

In the 12 months to June 2026, 86 reports listed it, up 18% from 73 in the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Over its reporting history that is about 25 reports a year and 0% of the 20,646,523 reports in the database, and 4.1% of the reports for the cytomegalovirus nucleoside analog DNA polymerase inhibitor class. How many people take it is not in the data, so a count is not a rate of occurrence.

Reporters most often recorded off label use (26.2%), drug ineffective (17.1%) and drug ineffective for unapproved indication (10.4%). A report can list several reactions, so shares add to more than 100%; 171 different terms appear across these reports. Off label use is recorded in 26.2% of these reports, about the same share as in the median cytomegalovirus nucleoside analog DNA polymerase inhibitor drug (24.1%).

96.5% of the reports are marked serious by the reporter (94.2% across the class); 39.1% record death among the outcomes and 43.5% record hospitalisation, as reported. 62% of the reports came from other health professionals, and the largest patient age group is 45 to 64 (29.9%). FDA states that "a causal relationship cannot be established between product and reactions listed in a report" and that for any given report "there is no certainty that a suspected drug caused the event."

Reports by month, five years

01428Jul 2021: 1Aug 2021: 1Sep 2021: 2Oct 2021: 1Nov 2021: 2Dec 2021: 42022Jan 2022: 3Feb 2022: 1Mar 2022: 2Apr 2022: 1May 2022: 1Jun 2022: 2Jul 2022: 1Aug 2022: 0Sep 2022: 6Oct 2022: 2Nov 2022: 4Dec 2022: 12023Jan 2023: 2Feb 2023: 23Mar 2023: 6Apr 2023: 3May 2023: 2Jun 2023: 4Jul 2023: 9Aug 2023: 4Sep 2023: 12Oct 2023: 3Nov 2023: 3Dec 2023: 22024Jan 2024: 16Feb 2024: 7Mar 2024: 12Apr 2024: 4May 2024: 7Jun 2024: 2Jul 2024: 8Aug 2024: 2Sep 2024: 15Oct 2024: 6Nov 2024: 3Dec 2024: 42025Jan 2025: 10Feb 2025: 1Mar 2025: 8Apr 2025: 2May 2025: 5Jun 2025: 9Jul 2025: 3Aug 2025: 6Sep 2025: 2Oct 2025: 9Nov 2025: 6Dec 2025: 82026Jan 2026: 28Feb 2026: 6Mar 2026: 3Apr 2026: 7May 2026: 5Jun 2026: 3

Reports by the month FDA received them. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases.

By year received

043862004: 1020042005: 62006: 92007: 2420072008: 92009: 252010: 4720102011: 322012: 232013: 420132016: 12017: 52018: 720182019: 292020: 152021: 1820212022: 242023: 732024: 8620242025: 692026: 52

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Ganciclovir sodium reports recording the termmedian drug in cytomegalovirus nucleoside analog dna polymerase inhibitor

  1. Off label useused for a purpose or in a way not on the label26.2%149
  2. Drug ineffectivethe medicine did not work as expected17.1%97
  3. Neutropenialow neutrophils, a type of white blood cell9.9%56
  4. Condition aggravatedthe condition being treated got worse5.5%31
  5. Product use in unapproved indicationused for a purpose not on the label5.5%31
  6. Pancytopenialow counts of all blood cells3.3%19
  7. Treatment failurethe treatment did not work3.2%18
  8. Aspergillosis2.8%16
  9. Cytomegalovirus infection reactivation2.6%15
  10. Leukopenialow white blood cells2.6%15
  11. Cytomegalovirus chorioretinitis2.3%13
  12. Multiple organ dysfunction syndromeseveral organs failing2.3%13
  13. Renal impairmentreduced kidney function2.3%13
  14. Stenotrophomonas infection2.3%13
  15. Thrombocytopenialow platelets2.1%12
  16. End stage renal diseasekidney failure needing dialysis or transplant1.9%11
  17. Enterococcal infection1.9%11
  18. Respiratory failurethe lungs could not supply enough oxygen1.9%11
  19. Brain abscess1.8%10
  20. Cytomegalovirus colitis1.8%10
  21. Fusarium infection1.8%10
  22. Intracranial infection1.8%10
  23. Renal failurekidney failure1.8%10

Top 30 of 171 MedDRA preferred terms recorded across these reports, with a plain-language gloss where one is available. One report can record several terms. The hollow bar is the median share across the 5 drugs in the cytomegalovirus nucleoside analog dna polymerase inhibitor class; it describes the reports, not the patients. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."

Outcomes recorded

Death39.1%222
Life-threatening9.2%52
Hospitalisation (initial or prolonged)43.5%247
Disability1.9%11
Congenital anomaly1.2%7
Other serious68%386
Not serious3.5%20

Outcome flags as the reporter set them; a report can carry several, and "other serious" is FDA's own category for serious reports outside the named outcomes. Grey bar: all 14,000 reports in the class. FDA has not verified any outcome and states that the reports "cannot be used to estimate the incidence of these events."

Patients and reporters

Patient age

Under 24.6%26
2 to 115.3%30
12 to 172.6%15
18 to 4422%125
45 to 6429.9%170
65 to 7411.4%65
75 and over3.5%20
Age not given20.6%117

Patient sex

Female32.6%185
Male54%307
Not given13.4%76

Who reported

Physician27.1%154
Pharmacist6%34
Other health professional62%352
Lawyer0%0
Consumer or non-health professional3.7%21
Not given1.2%7

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 24.1% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Cytomegalovirus infection11520.2%
Antiviral prophylaxis346%
Cytomegalovirus viraemia223.9%
Cytomegalovirus chorioretinitis213.7%
Cytomegalovirus colitis193.3%
Cytomegalovirus infection reactivation122.1%

The indication field is filled in by the reporter and is often blank; shares are of all 568 reports.

In context

MeasureGanciclovir sodiumCytomegalovirus nucleoside analog DNA polymerase inhibitorAll reports
Reports as suspect product56814,00020,646,523
Share of that pool—4.1%0%
Reports, latest 12 months86—1,332,454
Marked serious96.5%94.2%57.4%
Death recorded among outcomes, per 1,000 reports39123191
Hospitalisation recorded, per 1,000 reports435379213
Consumer-filed share3.7%11.8%45.8%
Top term, share of reportsOff label use 26.2%median 24.1%4.1%

Shares are of reports, not of patients treated. The number of people taking a product is not in the data, so none of these figures is a rate, and differences between columns reflect who takes a product, who reports and how long it has been sold. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."

Other drugs in the cytomegalovirus nucleoside analog dna polymerase inhibitor class

DrugName typeReportsLatest 12 monthsMarked serious
Valganciclovirgeneric5,24947996%
Ganciclovirgeneric4,72933997.9%
Valcytebrand2,3122380.1%
Valganciclovir hydrochloridegeneric1,14215997.2%

Ordered by report count for navigation only. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic." A brand and its generic are separate rows because reporters name them separately.

Questions about Ganciclovir sodium reports

How many adverse event reports has FDA received for Ganciclovir sodium?

568 reports list Ganciclovir sodium as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 86 of them arrived in the latest 12 months. Another 139 list it only as a concomitant medication.

What reactions are recorded in Ganciclovir sodium reports?

off label use (26.2%), drug ineffective (17.1%), drug ineffective for unapproved indication (10.4%), neutropenia (9.9%) and cytomegalovirus infection (9.5%). These are MedDRA preferred terms coded from what the reporter described; a report can list several, and a term's presence is not a finding that Ganciclovir sodium was responsible.

How serious are the reports?

96.5% are marked serious by the reporter. Among the outcomes recorded, 39.1% of reports include death and 43.5% include hospitalisation. FDA has not verified these outcomes and states that the reports "cannot be used to estimate the incidence" of the events.

Who files these reports?

other health professional (62%), physician (27.1%) and pharmacist (6%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Ganciclovir sodium rising?

86 reports in the 12 months to June 2026, up 18% from 73 in the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Counts also move with how many people take a product, its time on the market and publicity.

Do these reports show that Ganciclovir sodium was responsible for these reactions?

No. FDA states that "a causal relationship cannot be established between product and reactions listed in a report" and that for any given report "there is no certainty that a suspected drug caused the event." The reaction may relate to the condition being treated, to other medicines, or to something else.

Is this a list of the side effects of Ganciclovir sodium?

No. It is a count of what was reported to FDA. The adverse reactions observed in clinical studies are printed on the FDA-approved label, which a pharmacist or clinician can go through with you.

How do I report an adverse event?

Consumers and health professionals can report to FDA through MedWatch (Form FDA 3500 online, or 1-800-FDA-1088), or to the manufacturer, which must pass reports on. See the guide on how to report.

Where this comes from. Counts are built from the openFDA Drug Adverse Event (FAERS) bulk export released 28 Sep 2026, which holds reports FDA received through 30 Jun 2026. Drug names are as reported, resolved to the brand or generic name on the FDA label where openFDA's harmonisation matched them; classes are the pharmacologic class (EPC) from the label and the National Drug Code Directory of 17 Sep 2026. A report counts here when it lists Ganciclovir sodium as a suspect or interacting product; reports listing it only as a concomitant medication (139) are excluded. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.